Scilab Function
Last update : 12/1/2004

auwrite - writes .au sound file

### Calling Sequence

  `auwrite(y,aufile)`
  `auwrite(y,Fs,aufile)`
  `auwrite(y,Fs,bits,aufile)`
  `auwrite(y,Fs,bits,method,aufile)`

### Parameters

- `y`: real vector or matrix with entries in [-1,1].
- `aufile`: string (The .au extension is appended if no extension is given)
- `Fs`: integer, frequency sampling in Hz.
- `bits`: integer, number of bits in the encoding.
- `method`: string , `'mu'` (default) or `'linear'`, encoding method.

### Description

Utility function to save `.au` sound file. `auwrite(y,aufile)` writes a sound file specified by the string aufile. The data should be arranged with one channel per column. Amplitude values outside the range [-1,+1] are ignored. Supports multi-channel data for 8-bit mu-law, and 8- and 16-bit linear formats.

`auwrite(y,Fs,aufile)` specifies in `Fs` the sample rate of the data in Hertz.

`auwrite(y,Fs,bits,aufile)` selects the number of bits in the encoder. Allowable settings are bits=8 and bits=16. `auwrite(y,Fs,bits,method,aufile)` allows selection of the encoding method, which can be either 'mu' or 'linear'. Note that mu-law files must be 8-bit. By default, method='mu'.

### See Also

`auread`, `wavread`, `savewave`, `analyze`, `mapsound`,